Abstract: It is advantageous to distribute tasks of network services logically into separate service programs and also physically into several control points. A problem in task distribution is the single point of control, whereby only one service program at a time can control the call. The invention concerns a method of service distribution to several service programs (SLP). A control relationship is formed between the switching point (SSP, MSC) and the service program (SLP) providing it with instructions. The method according to the invention is characterized in that the controllability of the relationship is divided into controllability classes, of which at least one is allocated to the service program (SLP) controlling the switching point (SSP, MSC) so that each controllability class is allocated to only one service program at a time, and the call is controlled by the service within the limitations of the control authorization of each controllability class.

Abstract: The invention is based on the idea that in an intelligent network the order of execution of service programs at one point during the call, such as the detection point, is defined, and the service programs are contacted in this order until instructions are received to leave the point or release the call. The order of execution is defined by dealing with one category of service-related detection points after another, and within each category with a control relationship the order of execution is defined by a priority set for service programs.

Abstract: A telecommunication network exchange and method of playing an announcement to a call party in a telephone exchange during connection set-up. The invention is based on the idea of totally separating the detection of the need for an announcement from playing the announcement. The need for the announcement is detected in a conventional manner at a given stage of call set-up. However, the exchange does not play the announcement immediately, but delays playing it up to a later stage of call set-up or up to a later event, if necessary. The announcement may be played, for example, not until collection of additional dialing is definitely terminated, the call is confirmed to be successful, the announcement is confirmed to be necessary/correct, and so on. As a consequence of the delayed playing of the announcement, wrong and unnecessary announcements and the failure of the call are thus avoided.

Abstract: Services controlling the same call state model are independent of each other and do not necessarily have any knowledge of each other. To make the facilities of these parallel controlling services interoperable, at least one parameter is defined, whose value indicates whether a controlling service may be initiated to control a control record, if a controlling service has already been initiated. When detecting (301) a situation triggering the initiation of a second controlling service in the control record controlling call set-up, the initiation of the second controlling service is continued (315), if the parameter allows the initiation of the controlling service.

Abstract: The invention relates to a method of existing a collect information phase at an IN service switching pont in such a way that call set-up control is transferred from the IN service switching point (SSP) to the control point (SCP), even though the maximum of information requested as additional information by the IN service control point has not been received. In the method, a new condition (EE) is determined for the collecting phase (PIC2) and after the condition is fulfilled, the collecting phase is exited in such a way that the service control point (SCP) can make a decision how the call will be continued. The condition (EE) is either the maximum collecting time (collectTimer), which determines for how long the collecting of information is allowed to take at the most, or the minimum number (minNumberOfDigits), which determines how may digits as least have to be collected.

Abstract: A method of managing the performance of intelligent network services and an intelligent network, which comprises a number of service control points (101 to 103) and at least one service switching point (105), which comprises triggering data of one or more intelligent network services, which include the address data of the service control point (100 to 103) to which the intelligent network service request made to start the intelligent network service in question is sent, the intelligent network being arranged to control the performance of intelligent network services requested by said at least one service switching point (105) in the control points (100 to 103) by changing, if necessary, the address data of the control point (100 to 103) in which the intelligent network service is to be performed into the triggering data of one or more intelligent network services included in the service switching point (105).

Abstract: A method for enhancing an intelligent network service and an intelligent network comprising service switching points (2) and at least one service control point (1), the intelligent network being adapted to initiate an intelligent network service when detecting at a service switching point (2) a detection point defined by a call state model and triggering a service, and the intelligent network being further adapted to set at the service switching point (2), as a response to the initiation of an intelligent network service at one of the detection points, one or more detection points to trigger or not to trigger one or more intelligent network services.

Abstract: An intelligent network comprising service switching points (2) and at least one service control point (1), whereby for one or more call state models there are two or more service logic programs located at the service control point (1), the intelligent network being arranged to direct the call state model to a certain detection point or call phase in response to an operation sent by the intelligent network service, wherein at the service switching point at least one operation is defined, for the execution of which the service switching point can select from two or more alternative routes or detection points to which the service switching point can direct the call state model whereby the service control function is arranged to indicate the route or detection point to which the service switching point is to direct the call state model in connection with said sending of an operation.

Abstract: The invention concerns interworking between distributed services in a telecommunications network, especially in an intelligent network. The invention is based on the idea that at least one new Interworking Point is introduced to the call handling model and with the aid of this Interworking Point the interworking between the distributed services is implemented. The Interworking Point can be defined as either a point where instructions received from one service program are reported to interested service programs or as a point where a service to be carried out by the responsible service program is requested by some other service program. The interworking points are armed by the service programs, and the service programs which armed the interworking point are informed of the encounter with an interworking point.

Abstract: The invention is based on the idea that in an intelligent network the order of execution of service programs at one point during the call, such as the detection point, is defined, and the service programs are contacted in this order until instructions are received to leave the point or release the call. The order of execution is defined by dealing with one category of service-related detection points after another, and within each category with a control relationship the order of execution is defined by a priority set for service programs.

Abstract: A method of reducing message traffic between a service control point and a switching point for executing an intelligent network service in the service switching point. A service logic comprising the operations the execution of which implements said intelligent network service is formed for each intelligent network service to be executed in the switching point. The service switching point receives the service logic, and at lest one criterion, upon the fulfillment of which the service switching point is to execute said operations. Upon fulfillment of said criterion, the service switching point executes said operations.